michigan economic indicators a newsletter on key prepared by the senate fiscal agency highlights c advance estimate for inflation adjusted gross domestic product gdp showed growth of 3 1 in fourth quarter 2004 compared with 4 0 third most slower rate reflected worsening us trade position exports declined 9 while imports rose as result net flows reduced more than 7 percentage points lowered only point contribution to from government remained essentially unchanged consumption was slightly weaker and investment stronger an annual basis strongest increase since 1999 december motor vehicle sales were at seasonally 18 million units level october 2001 automobile 5 above year ago levels light trucks 2 higher heavy grew 31 imported vehicles exhibited automobiles up 17